Mixer and sifter



. H. W. DAVIS. Mixer and Sifter.

(No Model.)

NO .24I,845.

Patented May 24, I881.

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UNITED STATES PATENT OFFICE.

HORACE W. DAVIS, OF LAPEER, MICHIGAN.

MIXER AND S|FTER.

SPECIFICATION forming part of Letters Patent No. 241,845, dated May 24, 1881.

Application filed January 31, 1881.

To all whom it may concern Be it known that I, HORACE W. DAVIS, of Lapeer, in the county of Lapeer and State of Michigan, have invented an Improvement in Mixers and Sifters, of which the following is a specification.

The natureofmyinvention relates to certain new and useful improvements in the construction of devices particularly designed for mixin g and sifting baking-powder; and the invention consists in the peculiar construction, arrangement, and combinations of the various parts, all as more fully hereinafter set forth.

Figure 1 is a central vertical longitudinal section. Fig. 2 is a cross-section, partially in elevation. Fig. 3 is an enlarged perspective, showing method of adjusting the rubbing bar or blade upon the periphery of the rotating drum.

In the accompanying drawings, which form a part of this specification, A represents a rectangular box or case provided with the top B. l

O is a drum, whose shaft D has bearings upon the upper edges of the sides of the case A, as shown. This drum is provided with a slidin g door, a, which discloses an opening, through which the material to be mixed is introduced into the drum. This drum is also provided with inwardly-projecting wings I), which, as the drum is rotated, thoroughly mix the material therein contained. Below this drum and within the case Ais secured a segmental false bottom, E, a portion of which, 0, is formed of fine wire-cloth. Preferably, this sieve portion of the false bottom should be made removable, in order that it may be taken out when necessary to clean the same, and also (No model.)

biog-bar F to its adjusted position. This bar has secured to one side a piece of heavy rubber, d, or other suitable material, which projects beyond the edges of the bar.

While I have shown and described one manner of construct ing and arranging this rubberbar, I do not desire to confine myself to such precise construction, as there are many ways in which it could be constructed nithont departing from the spirit of my invention.

In practice, the material or various in gredients to be mixed are introduced into the drum in a finely-powdered state, the door a is closed and secured, the top B is shut down, and the drum is caused to revolve by means of a proper handle secured to one end of its shaft, this being continued until the contents of the drum have become thoroughly mixed. As in this operation the material is liable to become lumpy it is desirous that such lumps be reduced to a flour or powder; hence I then adjust the bar F in the position shown in Fig. 3 (it having been flat upon the drum during the mixing operation) and open the door a. By then rotating drum, a small portion of its contents will fall out upon the false bottom and screen at each revolution of the drum, and the bar F will rub it through the sieve into the bottom of the case, from which it may readily be removed through a door in the end.

What I claim as my invention is- 1. In a device for mixing and sifting and in combination with the drum 0 thereof, the adjustable rubbing-bar F and screen a, substantially as specified.

2. In combination with the drum 0, the adjustable rubbing-bar F, sliding boxes G, and spring-dogs H, substantially as and for the purpose specified.

In testimony that I claim the above I hereunto set my hand.

HORACE W. DAVIS. Witnesses:

H. S. SPRAGUE, A. BARTHEL. 

